Yunnan – Guangdong China HVDC is the 4th largest HVDC project in the world. Here's a picture of a transmission tower (Pylon).
The Yunnan–Guangdong HVDC is a high-voltage direct current transmission system connecting Chuxiong in the Yunnan to Suidong, Zengcheng in Guangdong, China. It is the first HVDC link in the world operating at a transmission voltage of 800 kV. The transmission line is operated by China Southern Power Grid.